Lock



Dec. 15, 1931. AALTONEN 1,836,425

` LOCK Filed Nov. 15, 1930 2 sheets-sheet 1 A Homey Dec. V15, 1931,.

W. AALTON EN LOCK 2 Sheets-Sheet 2 il if WM Filed Nov.v 15, 195o Allomey Patented Dec. 15, 1931 i Unirse WOLFRID AALTONEN; '0F JERSEY CITY,` NEW farisei? 'Application mea Naveni'ter `15,"1`9`3o. 'serial No. 496,011.

fo ing in orderto release, thelboltfrom its keeper. Thus it will be found 'di'fcult for van unauthorized person to successfullyv actuate thelock even though in possessionof'the correct key.

115 "Anotherobject'oftheinvention resides in a key actuated lock ofthe padlock type in which the shackle is locked by one 'end of 'a slidable bolt,the latter being constructed to enable the key to be inserted ltherein lengthoutward to move the bolt to retracted posi'- struction, c'ombina'tion 'and VVVa'rrangemen't of" parts, lthe essential features of which are herein fully described, vare particularly pointed out in the appended cla-im, and are illustrated in the accompanying drawings, in which,

Figure l is aI side elevational View of my improved lock, A

Figure 2 is an endview thereof,

Figure 3 is a side elevational view with the cover plate removed,

Figure 4 is a vertical transverse sectional view,

Figure 5 is a view similar to Figure 3, but showing the key in an inserted position within the lock, l

Figure 6 is a vertical transverse sectional view on the line 6-6 of Figure 5, y

Figure 7 is a vertical transverse sectional view through the lock but showing the key in dog actuating position, and; l

Figure 8 is a vertical longitudinal sectional view on the line 8-8 of Figure 7 Referring to the drawings by reference characters, the numeral 10 designates a caswise' thereof and turned to irelease the bolt ieg er housingwhieh isshewifssabstraitiai; ly rectangular configuration andwfhieh open at one side, the said open side closed alcover lplat'ef'll which islseciire'd in ps'itionby'screws-'rivets lor like fastening` 55n elements 1 2; Spaced ltransversely'tdispsed' partitions 13 'and 14 'are mounted withinftlie Casing adfjacetthe oppositie ends'ftherfgaaaf pivoted t'o an e'ar extendingfrointlie patis tion 14 'is 'a shackle1 l5, 4the sa'meheing s'ub- 60" stantially invertedv Ushape' in configuration. The free ends of'theshackleextnd through" opvnrg 16 p ",ovidedinpth'e topfof casing "and has 'a keeper 'opening 17 provided elefantes anche adapted@ register with` 65 an opening 18 'in theV` partition "13 Vwhen the shackle' is 'in closed'position.

"siiaabiysuppo'raabythe @melangisme t 14, a lock b'olt'lQ, one "end ofizvhich is "ren, duced toi .providefa'bolt head2() ,"vvhich is "16 movable through'the opening 18 in the par* tiftn lan'd into a boltopeningor slot 17 when vthe holt 'is in an extendedvor locked position. .e 'v l l f The "beit 19 isfjof substantially cylindrical 47E-g" shape and is provided with akeyholeshapfed slot 2l extending inwardly from one end alerter, was@ the ena offueeeeasjiag 11o is key holeropening" or A Sieges-which is nl @augmentent are sit-e121@ in the son te hanane `the 'ingestin @faire stein or shank 23 of aliey 2&,fthfesaid being; provided with la manipulating head i Vbev-vea; y

Theweb@fessierssip el inthe easing 'bfutvi'sI non-otata'` lemvvithre;z l speet theretoiand hasits oL erp'e'lriphery pro-p` vided wah-grave@ n ailes-ae ai; the ,tap

merece, riversare ascesa-gin spaced felation ared'ogs '27, .adaptedl te seat in are re-r im spective vgrooves or notches 26 the lock A bolt is'. in I extended position` and which bolt d,

is norniallyheldvinsiichfposition aeontra'tile sprinvf2, "one fen'dof: the be; in'gfconnectfed to ,th'e'bolt aid the opposite end 4 95 to the partitienl. Flatspri'ngs,.29supported'4 4 within the ,casing wbearf`ajgainst Ythe respective aegee? aaa and .to sea tiamina@ reste.-4 tive notchesbut thebills Iofthe d oig'gs extend .33 slightly beyond the peripheral wall of the m9 l lock bolt as best seen in Figure 4 for a pur- The stem 23 of the key 24 is provided withV a bit made up of a central4 U-shaped linger 32, and oppositely disposed L-shaped lingers 33, the latter extending in opposite direction. The lingers 32 and' 33 are movable in the. slots and the said lingers are spaced so" that the webs or flanges 31; will be disposed between the. fingers when the key `is in a turned position asshown in Figure 8 of the drawings. Assume that the parts of the lock are in the position shown in Figures 3 and 4 l* of the drawings, the bolt head 20 is in locking engagement with the shackle l15, whereupon the shackle is prevented frombeing swung to an open position. In order to actu- ,ate the bolt 19.l to move the same to a re-v 'tracted or unlocked position, it is necessary to insert the key 24 into the lock through the alined key hole openings 21 and 22, or to the positionshownin Figures 5 and 6.

When the key is in the position just mentioned, the lingers 32 and 33 are in the path ofthe free ends of the dogs 27 and by imparting an approximate one half turn to the key, the dogs are lifted `from the notches .or grooves 26 to the position shown in Figures 7 yand 8 of the drawings; it will be remembered that the spring 28 is acting upon the bolt 19 to hold the same in an extended position andI although the dogs have beenA released, the bolt is still in locked or extended position. In order to actuate the bolt 19 to a retracted position, the operator pulls outward upon the key 24, causing the sides of the lingers 32 and 33 to engage the flanges ,por webs 31 and certainwalls of the slots 30 lso that the outward pressure will cause the bolt 19 to slide to a retracted position, whereupon the shackle 15 may be swung open to the position shown in dot `and d'ash lines pin Figure 8. lUpon the outward pull upon the key, thev spring 28 will promptlyreturn the boltvto extended position and in which position the shackle may be swung to a locked position so that the bolt head 20 will, snap into the bolt Slot 17. To again set the'lock, the keyf 24 is turned to bring the lingers32 and 33 in register with the key holev slot and in so doing the springs 29 automatically seat the dogs 27 intheir respective notches, thus locking the bolt against sliding movement in either direction. After the key has been turned to unlocking position, it may be withdrawn from the lock in the usual manner. It might be stated that the opposite end walls of the slots 30 constitute stops for limiting the turning movement of the key in opposite direction as the lingers 32 and 33 strike the walls of the slots to permit of only a limited turning movement when actuating the key for unlocking position.

From the foregoing description, it will be seen that although a person may be in possession of the correct key for actuating the lock he or she is prevented from doing so unless familiar with the working of the lock as "it isnec'essary to Vpull outward upon the key after the same has been inserted and turned to a position to release the locking dogs or catches 27.

While I have shown and described what I deem to be the most desirable embodiment of my invention, it will be understood that various'changes in construction may be resorted toif desired and I d o not limit myself t0 theexactstructural kdetails herein set forth nor to anything less than the whole of my invention limited 5 only bythe appended claim. V

Having lthus described the invention, what is claimedas new and what it is desired to secure by Letters, Patent of the, United States, is: Y'

A lockcomprising a casing, a bolt slid. ably arranged in said casingand having a plurality of transverse grooves in vthe top part, a plurality ofspring pressed dogs in the top part of thev casing-engaging the grooves, said bolt having a plurality of transverse slots therein for receiving key parts which move the dog to releasingposition and the bolt having a key receiving slot therein which intersects the slots, portions ofthe walls of the slots acting as abutments for the keyparts whereby the bolt canbe moved rearwardly by the key and a spring for normally holding the bolt in projected position.

In testimony whereof I aliix my signature.

` VVOLFRID AALTONEN. 

